Buick Chevrolet Spark Plug Wire Set 27874 Blue Wire Universal Performance

For Buick and Chevrolet multiple models, distributor ignition spark plug wire set (OEM 27874) is a key transmission component of the ignition system. It accurately transmits high-voltage current from the ignition coil to each spark plug to ensure complete combustion of the air–fuel mixture. Compatible with multiple General motors engines; cross-compatible with OEM numbers 27873, 6718062, 12558693, etc. Installation difficulty: medium; labor about 1–1.5 hours. Pay special attention to distributor wire order and locking clips; the blue universal-performance version can effectively improve ignition efficiency and engine smoothness.